Big Kahuna Stick Road Blade Replacement ~ SUP the Streets! Replacement Vulcanized rubber road grip for your Kahuna Big Stick The polycarbonate casing provides the rigidity necessary to house the vulcanized rubber road grip. Removable. The Kahuna Blade is easily replaced. Simply remove two nuts and bolts, and pop on a new Kahuna Blade. The blade has two hooks on either side. This enables the freestyle rider to hook the board or rail creating countless new tricks.